Performance of the ATLAS Level-1 topological trigger in Run 2

ATLAS Collaboration

doi:10.1140/epjc/s10052-021-09807-0

Performance of the ATLAS Level-1 topological trigger in Run 2

High Energy Physics - Experiment 2022-01-14 v2

Authors: ATLAS Collaboration

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

During LHC Run 2 (2015-2018) the ATLAS Level-1 topological trigger allowed efficient data-taking by the ATLAS experiment at luminosities up to 2.1x10 $^{34}$ cm $^{-2}$ s $^{-1}$ , which exceeds the design value by a factor of two. The system was installed in 2016 and operated in 2017 and 2018. It uses Field Programmable Gate Array processors to select interesting events by placing kinematic and angular requirements on electromagnetic clusters, jets, $\tau$ -leptons, muons and the total energy. It significantly improves the background event rejection and signal event acceptance, in particular for Higgs boson and $B$ -physics measurements.

Keywords

ATLAS Level-1 topological trigger LHC Run 2 FPGA event selection Higgs boson B-physics

Cite

@article{arxiv.2105.01416,
  title  = {Performance of the ATLAS Level-1 topological trigger in Run 2},
  author = {ATLAS Collaboration},
  journal= {arXiv preprint arXiv:2105.01416},
  year   = {2022}
}

Comments

36 pages in total, author list starting page 20, 10 figures, 3 tables, published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TRIG-2019-02/

Performance of the ATLAS Level-1 topological trigger in Run 2

Abstract

Keywords

Cite

Comments

Related papers